639058 ÷ 30 
We want to figure out the number of times 639058 can be divided by 30.

Going ahead to step 1:
The number 30 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 30

Step 2:
30 can be fit into 63 2 times, resulting in a remainder of 3.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 60 from 63 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 30

Moving on to step 3:
The number 30 fits into 39 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 21.0
If we subtract 30 from 39, we get 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 30

Going ahead to step 4:
When dividing 90 by 30, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 213.0
The remainder is 0 after subtracting 90 from 90.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 30

Moving on to step 5:
If we divide 5 by 30, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 2130.0
If we take 0 away from 5, we end up with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 30

Let's proceed to step 6:
58 divided by 30 is 1 with a remainder of 28.
Write down 1 as next digit of the result. 
Result so far: 21301.0
Subtracting 30 from 58 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 7:
30 goes into 280 9 times with a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 21301.9
Subtracting 270 from 280 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
If we divide 100 by 30, we get 3 and a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 21301.93
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
The number 30 fits into 100 3 times, leaving a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 21301.933
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 21301.933, with a leftover of 0.001.